Test APIs at the
Speed of Thought
The only API testing platform designed from the ground up for Vibe Coding —where velocity meets quality, and documentation writes itself.
Seamless Integration with Your Workflow
Traditional API Testing Pain Points
In the Vibe Coding era, development speeds up but API testing becomes a bottleneck
Scattered Tools
Postman testing, Swagger docs, curl debugging exist independently, unable to form unified development workflow
Collaboration Difficulties
Team members maintain environment copies separately, change synchronization relies on manual alignment, error-prone and inefficient
Inefficient Debugging
Lack of detailed logs after request failure, messy JSON format requiring manual copy-paste to formatting tools
CI/CD Integration Challenges
GUI tools unsuitable for CI workflows, maintaining tests with scripts loses readability and documentation value
Version Management Difficulties
Test cases not in Git, cannot track history, separation of code and tests brings maintenance costs
Slow Response Time
Cloud tools depend on network, long wait times for batch testing affect rapid iteration pace
Local CLI High-Speed Execution
No waiting for cloud. Tests complete locally in milliseconds. Automatically records detailed logs with JSON auto-formatting for clear debug info.
Markdown as Docs as Tests
Write API flows in Markdown which serves as both documentation and test cases. Supports variable capture, complex assertions, conditional logic - code as documentation.
Cloud Platform Centralized Management
Team API docs, environment configs, and test cases unified in the cloud. One-click sync to local for seamless collaboration with traceable versions.
Git Workflow Native Integration
Test cases versioned alongside code, auto-integrated into CI/CD. True DevOps for development, testing, and deployment integration.
Documentation is the Test
Stop maintaining separate docs and scripts. With Kest, your API documentation is your test suite. Write human-readable Markdown and let our engine handle the rest.
Markdown-First Workflow
Define complex test sequences, captures, and assertions using simple Markdown syntax.
Zero-Config Automation
Run tests locally or in CI/CD with No-Ops setup. Just install and run.
Smart Data Mapping
Capture data from one response and use it as a variable in subsequent requests.
# auth.flow.md
## Step 1: Login
POST /api/auth/login
{ "user": "admin" }[Captures]
token: body.access_token
[Asserts]
status == 200
duration < 200ms
Professional Grade CLI
The heart of the Kest ecosystem. A powerful, lightweight binary built for engineers who love the terminal.
Fast & Efficient
Built in Go, the Kest binary is under 10MB and executes thousands of assertions per second.
Local History
Automatic SQLite persistence for all test results. Trace back failures without leaving your shell.
CI/CD Ready
First-class support for GitHub Actions, GitLab CI, and Jenkins. Guaranteed stability for your pipeline.
Everything You Need for API Excellence
API Documentation
Auto-generate and manage API specifications with RESTful standards. Keep your docs in sync with your code.
Automated Testing
Create complex test cases with assertions, environment variables, and automated collection runs.
Variable Orchestration
Capture dynamic values from responses and inject them into subsequent steps for seamless E2E flows.
Team Collaboration
Share environments, test results, and documentation across your entire engineering organization.
Performance Insights
Track response times, SLA compliance, and debug failures with unified session logs and detailed assertions.
Global Environments
Manage dev, staging, and production configs with ease. Securely handle secrets and API keys.